Actors Kerry Washington and Forest Whitaker once collaborated on the feature The Last King Of Scotland. But Washington admitted that she didn’t have the easiest time working alongside Whitaker after he immersed himself in his role.
Forest Whitaker was consumed by his character in ‘The Last King of Scotland’

The Last King of Scotland was a 2006 movie adapted from the 1998 novel of the same name. It featured James McAvoy playing Nicholas Garrigan, a young doctor who finds himself taking care of Ugandan President Idi Amin.